Abdur R.

Hiring a developer shouldn't feel like hiring someone to build a feature and then discovering they can't handle the infrastructure, scalability, or production challenges that come with it. Many developers can build a CRUD application. Fewer can migrate systems to AWS, optimize bottlenecks affecting thousands of users, design scalable APIs, automate business processes, and troubleshoot production issues when they happen. That's where I bring value. I'm a Full-Stack Software Engineer specializing in scalable web applications, cloud infrastructure, AI-powered automation, real-time systems, and backend architectures that support real business operations. I work across the entire stack—from React and Next.js on the frontend to NestJS, FastAPI, AWS, Redis, and PostgreSQL on the backend. 𝗪𝗵𝗮𝘁 𝗜 𝗛𝗮𝘃𝗲 𝗕𝘂𝗶𝗹𝘁 ➜ MindLeap | CMS Led a production migration from Heroku to AWS EC2, implemented deployment automation, optimized certificate generation workflows, and solved performance bottlenecks related to large-scale downloads and batch processing. → Result: Improved reliability, reduced infrastructure costs, and faster deployments. ➜ Gymyg – Live Fitness Platform Contributed to the development and scaling of a fitness platform connecting trainers, coaches, and clients through real-time communication and digital coaching experiences. Built backend services using NestJS, developed APIs for workout management and scheduling, implemented Redis/BullMQ-based workflows, managed AWS infrastructure, deployments, SSL configuration, Nginx setup, and production troubleshooting. → Result: Improved platform stability, scalable architecture, and reliable real-time coaching experiences. ➜ AI & Automation & CRM Systems Led the development and ongoing management of automation systems for Park PA, utilizing GoHighLevel, custom backend services, and third-party integrations. Designed and implemented workflows for lead nurturing, customer communication, appointment management, AI-assisted interactions, and business process automation. Worked closely with operational requirements to build scalable automation pipelines that integrated multiple systems while minimizing manual intervention and improving workflow reliability. → Result: Increased operational efficiency, automated key business processes, improved lead handling, and reduced time spent on repetitive tasks. ➜ Attendance & Workforce Management Systems Integrated ZKTeco biometric devices, developed attendance synchronization pipelines, CSV import systems, reconciliation workflows, and workforce management features. → Result: Eliminated manual attendance processing and improved operational accuracy. ➜ Cloud-Native Backend Platforms Designed and developed backend systems using FastAPI and NestJS, implemented asynchronous processing with Redis, BullMQ, and Celery, integrated AWS services, and built scalable APIs for production workloads. → Result: Reliable systems capable of handling large batch operations and long-running background tasks. 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 ✔ Full-Stack Web Application Development ✔ Backend & API Development ✔ AI Integrations & Workflow Automation ✔ AWS Infrastructure & Cloud Deployments ✔ Real-Time Applications & WebSockets ✔ Microservices & Distributed Systems ✔ Background Job Processing & Queue Systems ✔ Database Design & Optimization ✔ Server Migration & DevOps ✔ Performance Optimization & Scalability 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 Frontend: React.js, Next.js, TypeScript, JavaScript Backend: NestJS, FastAPI, Node.js, Express.js, Python Databases: PostgreSQL, MongoDB, MySQL, Redis Cloud & DevOps: AWS EC2, S3, IAM, Docker, CI/CD, Linux, Nginx, GitHub Actions AI & Automation: OpenAI API, ChatGPT Integrations, AI Assistants, GoHighLevel, Workflow Automation Architecture: REST APIs, Microservices, Event-Driven Systems, Background Processing, WebSockets Integrations: Stripe, OAuth2, Third-Party APIs, Webhooks Beyond development, I also handle AWS infrastructure management, Docker deployments, Redis-based task queues, deployment automation, production debugging, database optimization, server migrations, monitoring, and long-term system maintenance. If you're building a new platform, scaling an existing application, migrating infrastructure, implementing AI capabilities, automating business processes, or solving backend performance issues, send me a message with your project details, current challenges, and timeline. I'll tell you exactly how I would approach it and whether I'm the right fit. FastAPI | NestJS | Python | Node.js | React.js | Next.js | TypeScript | PostgreSQL | MongoDB | Redis | AWS EC2 | AWS S3 | Docker | CI/CD | REST APIs | Microservices | OpenAI API | ChatGPT Integration | GoHighLevel | Workflow Automation | Celery | Background Jobs | Authentication | Stripe Integration | OAuth2 | Linux | Nginx | Server Migration | Cloud Infrastructure | API Development | SaaS Development | Full-Stack Development | GoHighLevel